Ice-cream mold



F. W. BALL May 4 1926.'

v Filed mi.

` To all lwhom; t 72mg/ 'concerti Patented May 4, Q@ n nerr En :strates-ffPair-ENT ififorri-icn.

EFRLDERICK 1W; f'BALLwOF' VNCOUVE, BRITISH'GO'LUMBIA, rGADTACDA,-,ASSI('(:TrNO'R 0F ONE-THIRD TO JAMESJ'. LOGAN, OF AGASSIZ?. BRITISH COLUMBIA, CANADA, AND ONE-THIRD TO ROSIJAND` JENKINS,- VANCOUVERy BRITISH COLUMBIA,

I CANADA. Y,

IGE-GREAM MOLD.

Application filed' February 2, Y1924; 'fseriarnnfeeo,'3a4.

integral ioriemovable bottom. These'lilled Be it known that I, lnnnnurci lV. BALLfmoldsare placedliira'refrigera'tingchamber, a citizen of the "United States, residing'at"'thetempe'rature'ofwhich-'isfreducedapproxi- Vancouver, in the Province oi' British Co ma't'ely'V to zero, underw'hich exposure-the lumbia, Ca-nadafh'aye inventedcertain newmaterial iii'tlie'in'old fis frozen solid. and useful 'i improvements in Ice-Cream Eachmold Qencl'o'singits block offfr'ozen Molds, of which the'following'is a' specicaioe cream is then placed on a slab 'loflnontion. Vconductingmaterialibetween the `l`terminals This invention relates to a meansffor ef 4 and'fof a circu'itin whichan -electriccur lectingrelease loit' a body of'ice 'cream which 'f rentcffrom one thousand toiiye' thousand cream is prepared in the 'briclcliornu the ina-5""m0ltl) 'S Cllveeh 'ittica lelltilely 10W VO- terial in a partiallyfrozen'condition-is filled age 0f' r`Say approXHhatelyf'hal a `volt. intoamold or' thin sheet niet-al, such as tin Each terlnnal'c'and 5` extends across an plate, and in the mold is subjected to azero areaY ofthe sidesI Ior= ends or" Vthe' -mold'and temperature that will effect itsI freezing to liCOI'lUaCt isfmade through-a number ot relathe 4desired extent. Thereafter, the' :frozen tively'small resilient contacts 6,'vsofas` to'fobblock of ice 'creain isI removed fromthertain alsucient"conducting arcate f'del'iyer mold, usually by dipping the mold'into hot the considerable"currentwithoutlocallheatwater, therebyreleasing-the 'frozen material :ing vof fthe contacts. The sprlng'fcontacts G from thesnrface of the mold. 7 *also adapt themselvestoslighti"regularities This method isopen to' many objections "in tfhefend faces of the mold. and is not considered eithersanitaryor'con- The-resilient contacts 6am-ay lbe 'applied in Venient, and it is to provide a cleaner, quickany convenient" manner totheends *of Athe er and moresatisfactory methodfof releasing 'mold iIn "the drawing they are shown as the Yfrozen brick of `ice 'cream from its nrold, "Securedto-ahandled"backing 7 of non-contl'iat the device,` which isthe-subject of this, ductingfmaterialfandthe circuit currentde application, has rbeen devised. lr'livered tol ythemfthroughtleibleflatleads In it'the opposite ends of the met'alf mold 8 and 9. y areplaced between the'terminal contacts of i One oftheseterminals' 4 is'ffa'p'pliedfito the an electric circuitf'inwhiclr a large'` current fbase'slab afg-ainst'two'pins11G in iixiedp'osiof relatively low vvoltageus' maintained ltion. The mold'Qcontaining `it sfbr'i`ck ot rihis current, `passingthrough thefwalls of l"frozen ice crea'm,is, as shown inthedrawthe mold, immediately heats them to asutli- -ing,applied to'fthe conta'ctsof theterininal cient extent to release the frozen material =`4l,and at the othery endapini llf'is linserted from them. 4 'inf' vone ofthe" apertures l2' siiitable' to the Themeans ley-which this result is' attained fl'en'gthofPt-he mold 2. is fully set forth in the following specilica- "Ihe'other terminal istheni applied'betion, reference beingmade to the drawings twe'enthepin l1!- -and 'theuaiold 'and/by the by which it is accompanied, in which: handled end its contacts 6 are pressed into F l is a vertical section of the appliance, engagement with the end of the mold. and The current passing through the walls of Fig. 2 is a plan of the same. the box 2 between the terminals t and I In these drawings 2 represents the walls quickly heats those walls to a sufficient exot' the mold, which may be or" any suitable tent to release the frozen brick of ice cream form, but'is here shown as rectangular in from them. plan and cross section. The material to be I do not desire to be confined to the parcharged into the mold being partially frozen ticular manner herein shown and described is suiciently plastic that, as shown in the of applying the contact terminals to the drawing, the bottom of the mold may be ends of the mold, as such may loe Varied closed by the slab on which the mold is within wide limits, and I regard the essenplaced on a sheet of waxed paper; or, as is tial feature of the invention to be the applifrequently the case, the mold may have an cation of a considerable current at a low voltage through the Walls of metallic ice cream mold whereby those Walls are heated and the frozen brick of ice cream released.

With this application the mold is quickly and uniformly heated, and the uniformity of the heating in itself hastens the process of removal; Whereas in the present method of heating the mold with hot Water, the heating cannot be done uniformly and as a consequence some parts of the brick are adherent to the mold, While the heat of the other parts of the mold is communicated to some depth in the material of the brick, and the table on which the Work is performed becomes sloppy and insanitary, With a corresponding loss of material and imperfection in the. form and condition of the molded brick.

Having non7 particularly described my invention, I hereby declare that What I claim as new and desire to be protected in by Letters Patent, is:

l. A means for freeing a body of ice cream from the Walls of the mold in Which it is frozen, said means comprising a base of non-conducting material on which the mold is set, an electric circuit adapted to carry a current of suitable strength and voltage to heat the mold when passed through its Walls, said circuit including terminal contacts applicable to opposite sides of the mold on the base and each adapted to pass the current to the mold at the places of contact, fixed abutments on the base against which one of said circuit terminals lies, said base having an adjustable abutment against Which the other circuit terminal is adapted to lie, whereby molds of different lengths may be manipulated, substantially as shown and described.

2. A means for freeing a body of ice cream from the Walls of the mold in which it is frozen, said means comprising the combination with an electric circuit in which is a current of suitable strength and voltage to effect the heating of the mold, and means for connecting the terminals of that circuit to the opposite sides of the mold through a number of separated resilient contacts that will ai'ord sufficient area for conveyance of the current Without excessive heating at the places of contact.

S. A means for freeing a body of ice cream from the Walls of the mold in Which it is frozen, said means comprising a base of nonconducting material on which the mold is set, of an electric circuit adapted to carry a current of suitable strength and voltage to heat the mold when passed at uniform density through its cross section, said circuit having terminal contacts applicable to opposite sides of the mold on the base and each adapted to pass the current to the mold -Without excessive heating at the places of contact.

4t. A, means for freeing a body of ice cream from the Walls of the mold in which it is frozen, said means comprising a base of nonconducting material on which the mold is set, of an electric circuit adapted to carry a current of suitable strength and voltage to heat. the mold When passed at uniform density through its cross section, said circuit having terminal contacts applicable to opposite sides of the mold on the plate and each adapted. to pass the current to the mold Without excessive heating at the. places of contact, and means for manually applying the terminal contacts to opposite sides of the mold.

5. A means for freeing a body of ice cream from the Walls of the mold in which it is frozen, said means comprising a base of nonconducting material on which the mold is set, of an elec-tric circuit adapted to carry a current of suitable strength and voltage to heat the mold when passed through it, said circuit having terminal contacts each adapted to pass the current to the mold Without excessive heating at the places of contact, means for relatively permanently supporting one of the contacts on the base, and means for adjustably supporting the other terminal on the base that it may be manually pressed into contact With they mold and press the mold into contact with the contacts of the other terminal.

In testimony whereof I aiiix my signature.

FREDERICK W. BALL. 

